those states include nevada, kansas, north carolina, colorado, missouri and ohio. >> reporter: we are in cuyahoga county, downtown cleveland. they have a long history of problems including missing votes and missing voting machines. we were her voting on the acorn scandal. freddy johnson told me he was registered to vote by acorn 73 times. turns out he was just the tip of the iceberg. two election officials were convicted of rigging the 2004 presidential recount. the 2006 voter cards and voting machine keys were lost. employees took vote magazines home to test them and taxi drivers transported the memory cards from the polls that held all the votes. >> there was a systemic break down in 2006. but if we are evaluating the situation as of today in 2012, i think it is fair to say that that systemic breakdown did not reappear in 2010. >> reporter: officials insist they overhauled the procedures with new guidelines. no more taxi cab drivers. sheriffs take them from the polls accompanied by a democrat and a republican official. >> reporter: have you seen acorn-type problems now? >> no, we do